package org.cbioportal.legacy.web;

import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

@ControllerAdvice
public class GeneralControllerAdvice implements ResponseBodyAdvice<Object> {

  @Override
  public boolean supports(
      MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) {
    return true;
  }

  @Override
  public Object beforeBodyWrite(
      Object body,
      MethodParameter returnType,
      MediaType selectedContentType,
      Class<? extends HttpMessageConverter<?>> selectedConverterType,
      ServerHttpRequest request,
      ServerHttpResponse response) {
    ServletServerHttpRequest servletServerRequest = (ServletServerHttpRequest) request;

    // report the procesing time of all api endpoints to aid in benchmarking as we transition
    // to clickhouse
    long startTime = (long) servletServerRequest.getServletRequest().getAttribute("startTime");
    long timeElapsed = System.currentTimeMillis() - startTime;
    response.getHeaders().add("Elapsed-Time", String.valueOf(timeElapsed));
    return body;
  }
}
